Recommended Fuel - Cadillac ATS 2014 Owner's Manual

Cadillac ATS Owner Manual (GMNA-Localizing-MidEast-6335741) - 2014 -
CRC - 5/20/13
9-76 Driving and Operating
Fuel
Use the recommended fuel for
proper vehicle maintenance.

Recommended Fuel

Use regular unleaded gasoline with
a posted octane rating of 91 RON or
higher. If the octane rating is less
than 91 RON, an audible knocking
noise commonly referred to as spark
knock, may be heard. If this occurs,
use a gasoline rated at 91 RON or
higher as soon as possible. If heavy
knocking is heard when using
gasoline rated at 91 RON or higher,
the engine needs service.
Use of Seasonal Fuels
Use summer and winter fuels in the
appropriate season. Driving or
starting could be affected if the
incorrect fuel is used. Drive the
vehicle with the engine running until
the fuel is a half tank or less, then
refuel with the current seasonal fuel.
Prohibited Fuels
Gasolines containing oxygenates,
such as ethers and ethanol, as well
as reformulated gasolines are
available in some cities. If these
gasolines comply with the
previously described specification,
then they are acceptable to use.
However, E85 (85% ethanol) and
other fuels containing more than
15% ethanol must be used only in
flex fuel vehicles.
Black plate (76,1)
Caution
Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
That damage would not be
covered under the vehicle
warranty.
Some gasolines that are
not reformulated for low
emissions can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use
gasolines with MMT as they can
reduce spark plug life and affect
emission control system
performance. The malfunction
indicator lamp may turn on. If this
occurs, see your dealer for service.